package com.itheima.common;

import com.baomidou.mybatisplus.core.handlers.MetaObjectHandler;
import lombok.extern.slf4j.Slf4j;
import org.apache.ibatis.reflection.MetaObject;
import org.springframework.stereotype.Component;

import java.time.LocalDateTime;

/**
 * 自定义元数据对象处理器
 */
@Component
@Slf4j
public class MyMetaObjectHandler implements MetaObjectHandler {
    /**
     * 插入（新增）时调用
     * @param metaObject
     */
    @Override
    public void insertFill(MetaObject metaObject) {
        log.info("公共字段自动填充insert...");
        metaObject.setValue("createTime", LocalDateTime.now());
        metaObject.setValue("updateTime", LocalDateTime.now());

//        从线程空间中获取提前设置好的id
        metaObject.setValue("createUser",BaseContext.getCurrentId());
        metaObject.setValue("updateUser",BaseContext.getCurrentId());

    }

    /**
     * 修改时调用
     * @param metaObject
     */
    @Override
    public void updateFill(MetaObject metaObject) {
        log.info("公共字段自动填充update...");

        metaObject.setValue("updateTime", LocalDateTime.now());
        metaObject.setValue("updateUser",BaseContext.getCurrentId());
    }
}
